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Category : Chemistry

Chemistry Questions from elementary level up to Intermediate (+2) level.

Question
A percolation bulb of 200 ml filled with air is heated from 27 °C to t°C. The air thus expelled measured 170 ml at 7°C. The pressure was always 1 atm. Calculate the value of t.
solved 0
Chemistry Nageshwar Rathore 3 weeks 1 Answer 38 views 0

Question
A gas weighing 12.5 g is contained in a constant volume vessel at 27 °C at certain pressure. Temperature is now increased to 352 °C. Calculate the mass of gas released from vessel, if pressure is held constant.
solved 0
Chemistry Nageshwar Rathore 3 weeks 1 Answer 26 views 0

Question
The decreasing order of stability of ions is (i) CH3 – CH+ – CH3 (ii) CH3 – CH+ – OCH3 (i) CH3 – CH+ – COCH3 (a) (i) > (ii) > (iii) (a) (ii) > (i) > (iii) (a) (ii) > (iii) > (i) (a) (iii) > ...
solved 0
Chemistry Ankush Bansal 3 months 1 Answer 74 views 0

Question
Which of the following is a doubly magic nucleus (a) 82­Pb207 (a) 82­Pb206 (a) 82­Pb208 (a) 823Pb209
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Chemistry Ankush Bansal 3 months 1 Answer 58 views 0

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